Type-writing machine



3 SheetsSheet 1.

(No Model.)

B. S. BELDEN.

TYPE WRITING MACHINE.

No. 324,520. Patented Aug. 18, 1885.

N, PETERS, Plume-Lithographer, Washmglon. D. c"

2 b e B h S m e e h S 3 H N m N Em DM L, Em U M S .W EB P Y T (NoModel.)

No. 324,520. Patented Aug. 18, 1885.

(No Model.) 3 sheets-sheet 3.

E. S. BELDEN.

TYPE WRITING MACHINE.

No. 324,520. Patented Aug. 18, 1885'.

NITED b iraTEs PArhNr @rrrcn.

EDW'IN S. BELDEN, OF SAN FRANCISCO, CALIFORNIA.

TYPE WRlTING MACHINE.

SPECIFICATION forming part of Letters Patent No. 324,520, dated August18, 1885.

Application filed October 2, 1884.

To all whom it may concern:

Be it known that I, EDWIN S. BELDEN, of the city and county of SanFrancisco, and State of California, have invented an Improvement inType-WVriting Machines; and I hereby declare the following to be a full,clear, and exact description thereof.

My invention relates to that class of typewriting machines known ascaligraphs, and to a new and useful improvement therein, the object ofwhich is to give to each letter or other character approximatelysuitable space according to the requirements of its width.

On the 27th day of March, 1884, I filed an application for a patent,Serial No. 125,781, ior an improvement in caligraphs, the object ofwhich was to make the last letter of a word and the space following itat the same time. "his was accomplished by the mechanism operated by thespace bar or key, which permitted the paper-carriage to move a greaterdistance than any of the type-keys could effect. My present inventionembodies a part of that mechanism, conducing to the same end of permitting a varied movement, between suitable limits, of thepaper-carriage; but the present mechanism, while differing somewhat indetails, is essentially different in the graduated stop and the meansemployed for calling it into action, as the result to be attained is ofa different nature.

My invention consists in the devices which I shall hereinafter fullyexplain by reference to the accompanying drawings, in which Figure 1. isa perspective rear View of a part of the frame of a caligraph, showingit in skeleton with my improvement attached. Fig. 2 is a perspectiveview of the bottom, taken from the rear. Fig. 3 is an enlarged detailperspective of the graduated stop, showing its relation to adjacentparts.

It will be necessary, in order to show the application of my invention,to describe briefly the main features of a caligraph and theiroperation.

Ais the frame; B, the rows or banks of keys on spindles b, connectedwith and adapted to depress the key-levers G, to which the rods whichoperate the usual type-levers are attached.

On top of the machine is mounted on the (No model.)

usual guide-rails the traveling paper-carriage E, which derives itsmotion from right to left by means of the spring-rod F under themachine, the bent arm G, and the link I-I, all arranged in the customarymanner.

Upon the back of the papevearriage is secured the horizontal fixed rackI, upon the back of which is attached, by the usual-pinand-slotconnection, the sliding or slip rack J, which, under the influence of aspring, (not herein shown,') has a constant tendency to move to theleftto its limit against a lug, i, on the fixed rack, or, as herein shown,against the stop-screw i, set in the'lug, and which, as I shallhereinafter show, forms (though not essentially) a part of my graduatedstop.

Pivoted horizontallyin the lower portion of the back of the machine isthe rocker-shaft K, operated by the side arms, 75, the forward ends ofwhich carry the cross-bar L, with which the key-levers come in contact.The rocker-shaft K has an arm, 7c, the top of which carries the pawl M,which engages with the racks. A spring, m, pulls the pawl back after ithas been rocked forward. The normal position ofthe pawl is in engagementwith the sliding rack J; but when moved forward it releases said rackand engages with the fixed rack I. Thereupon the rack J slips to theleft, as I have heretofore mentioned, whereby the pawl, upon returningbackward,engages wit-h a tooth to the right of the one whose engagementis left. The fixed rack, being then released, moves to the left,

carrying the paper-carriage. It has been customary to thus release therack and catch it again by the succeeding tooth, whereby the same spaceis allotted to each letter or character irrespective of its width. Assome letters are wider than others, it is manifest that an irregularityin the printing results; but if each letter or character be givenapproximately its required space this irregularity will not occur, andthe printing will be much more uniform.

For the purposes of my present illustration I divide the letters of thealphabet into three classes, grouping in one class the narrow, inanother the medium, and in the third the wide letters. I then so dividethe teeth of the racks that the distance between adjacent teeth shallequal the space of the narrowest letters, the distance of two teethshall equal the space required by those of medium width, and thedistance of three teeth shall equal the space of the widest letters.

In order to cause the carriage to move one, two, or three teeth beforebeing limited, I have a graduated stop, which is adapted to variouslylimit the motion of the sliding rack, whereby it may be brought intoproper position to be re-engaged by the pawl in the proper tooth.

Pivoted in small. lugs 77/ on the fixed rack is a flap-bar, N, its endbeing provided with a wingplate, the face of which is provided with arabbet, whereby a graduated stop, 0, is formed. This stop is adapted bythe motion of the flap-bar to lie in line with the end of the slidingrack. Now, when the stop is swung to such a position that the slidingrack strikes its thickest portion, it will be limited to a slightermovement than when it strikes its deepest portion, and thus the stop canbe so arranged that the rack, by coming in contact with one portion ofit, shall be limited to v move but one tooth, and by striking otherportions shall be limited to move two, three, or even more teeth.

The mechanism by which the graduated stop is thus operated is asfollows: Pivoted in bearings p at the back top of the machine is arock-shaft, P, carrying an arn1,p, which bears up under and is adaptedto raise the flap-bar by which the stop is carried. Secured to therock-shaft, near each end, are the cranks q, to which rods Q aresecured. The lower ends of the rods are pivoted to the side arms, R,which are themselves pivoted between the power and weight by the hangersr. The forward ends of the arms B have a cross-bar, S, extending underthe key-levers. These latter levers are adapted to come in contact withand depress the cross-bar S, whereby the shaft P above is rocked,through which the flap-bar is raised to swing its graduated stop intoproper position for the sliding rack to operate against it. It will beseen that the extent of the depression of the cross-bar S controls themovement of the graduated stop, and therefore the key-levers are adaptedto come in contact with said bar during more or less of their stroke,according to the width of the letters operated by said levers. This isaccomplished in any suitable manner, as by the pieces or lugs 00 on thebottoms of the levers, some of which, as for the thick letters, arewidc,and some, for the narrow letters, are narrower,whereby the bar Smay be depressed to various distances. This would be the generaloperation if my invention were carried out strictly on the ideas hereinexpressed; but there is a peculiarity in the mechanism which resultsfrom a further idea, and which I shall now explain.

In dividing the letters of the alphabet int three classes, as I havedescribed, it will be found that those of medium width are far stop hasno mot-ion imparted to it, but remains in a state of rest while theseletters are being printed. Consequently I so form the graduated stopthat its rearmost depression or rabbet (designated by 0) shall, when thestop is at rest, be in line to receive the impact of the sliding rack,and this rabbet is made deep enough to limit the rack after it has moveda distance of two teeth. In this way, with the large majority of theletters, the stop does not move. The portion 0 of the stop immediatelyforward of o is thicker, and when swung back into line with the slidingrack limits its movement to one tooth, and therefore this motion of thestop is derived from the operation of the key-levers of the narrowletters, acting through cross-bar S, arms R, rods Q, rock-shaft P, arm19, and flap-bar N, as I have described. Now, if I chose, I could makethe next portion of the stop the deepest of all, and cause it to swingback into position by motion derived from the operation of thekey-levers of the wide letters, whereby the rack would be limited onlyafter it had moved three teeth; but instead of doing this, which wouldincrease the size of the stop, I provide that the screw i, heretoforementioned, shall act as the third st op, and I consequently cause thekeylevers of the wide letters to depress the crossbar S to such anextent as to swing the stop 0 back entirely out of the way, thusallowing the rack to come in contact with the screw.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. In a type-writing machine, the combination of a vibrating pawloperated by the keylevers, a fixed and a sliding rack, as described, anda swinging graduated stop, against the several graduations of which thesliding rack is adapted to come in contact, whereby the movement of thepaper-carriage is limited at varying distances, substantially as hereindescribed.

2. In a type-writing machine, the combination of a vibrating pawloperated by thekeylevers, a fixed and a sliding rack, as described, agraduated stop, against which the sliding rack is adapted tobear,whereby the movement of the paper-carriage is limited, and amechanism, substantially as described, consisting of levers andconnecting-rods operated by the key-levers to swing the graduated stopinto position to bring its several graduations or depressions into linewith the sliding rack, according to the key-lever operated, whereby themovement of the paper-carriage is limited at varied distances,substantially as and for the purpose herein described.

3. In a type-writing machine, a vibrating pawl operated by thekey-levers, a fixed and a sliding rack, as described, and the graduatedstop Oin line with the end of the sliding rack, and adapted to limit itsmovement, in combination with the mechanism by which said stop isvibrated to bring'its several graduations or depressions into line withthe sliding rack to limit the movement of the paper-carriage at varieddistances, consisting of 'the pivoted flap-bar N, on which the stop ismounted, the rock-shaft P, having arm 19, hearing under the fiapbar, thecranks q on the shaft, the connectingrods Q, the pivoted side arms, It,and the crossbar S, passing under a: d adapted to be depressed todifferent distances by thekeylevers, substantially as and for thepurpose herein described.

4. In a type-writing machine, the traveling paper-carriage E, theadjacent fixed and sliding racks I J thereon, the key-levers O, and thecontrolling-pawl M, vibrated by the opera tion of the key-levers actingthrough suitable mechanism, as described, in combination with thegraduated stop 0 in line with the end of the sliding rack, the pivotedflap-bar N, on which it is mounted, the rock-shaft P, having arm 0, foroperating the flap-bar, the cross-bar S, passing under and adapted to bedepressed to various distances by the key-levers,and connecting devices,substantially as described, whereby the motion of bar S is transmittedto the rock-shaft, substantially as and for the purpose hereindescribed.

5. In a type'writing machine, the combination of a vibrating pawloperated by the key levers, a fixed and a sliding rack, as described,the graduated stop 0 in line with the end of the sliding rack, thepivoted flap-bar N, on which the stop is mounted, the rockshaft P,having arm 19, the cross-bar S, passing under the key-levers, andconnecting devices, substantially as described, between said crossbarand rock-shaft, whereby when the former is depressed the latter isrocked to swing the graduated stop, in combination with the keylevers Oof the machine, provided with lugs 50 of different widths,and adapted todepress the cross-bar S to different distances, substantially as and forthe purpose herein described.

'6. In a type-writing machine, the combination of a vibrating pawloperated by the keylevers, a fixed and a sliding rack, as described, thegraduated stop 0, having a rabbet or depression, 0, in line with thesliding rack when said stop is at rest, and adapted to limit said rackafter it has moved a distance of two teeth, and a shoulder brought inline with the sliding rack by the swinging of said'stop to limit therack after it has moved one tooth, the pivoted flap-bar N, the crossbarS, and connecting devices, substantially as described, for transmittingmotion to the graduated stop, in combination with the key-levers O ofthe ma chine, some or" which vibrate free of the crossbar S, whereby thestop remains at rest and others depress the bar to various distances toswing the stop through a longer or shorter are, substantially as and forthe purpose here in described.

7. In a type-writing machine, in combination with a vibrating pawloperated by the key-levers, and a fixed and a sliding rack, asdescribed, the swinging graduated stop 0, operated by the key-levers tolimit atdifferent distances the movement of the sliding rack, and thestop-screw z" in a lug, i, on the fixed rack, adapted to receive andlimit the sliding rack at a certain distance when the stop is movedback, substantially as herein described.

In witness whereof I have hereunto set my hand.

EDWVIN S. BELDEN.

Vitnesses:

O. D. OoLE, J. H. Broon.

